— 354 — 



quadtnti, cioe medianle le [k ), (A-.); tutlavia non s'incontrerebbe per qucsta 

 ultima specie veruna soUizione ripetuta; pertanto queste ultima otto soluzioni 

 saranuo le seguenti : 



■,' =C (a,=-fc,^)(a2=-i2'')-4a,a26,fcj l(a!^^~b!^'){a3'-bi^)—AaJ>:,aibi ]— 4(a,a,-6,6,)(o,6.-+-a.6,)(a4(ij-fc46j)(«4ftj-Hijti) 

 •/' =[ («,'-fc.")(rt/-fr2")-4a,«:ifcit2] [(a4''-fe4')(a3''-fc3^)+4a4J»4ajfc3 'l-+-A{aiaz~bib^)(a,b^-haJ},){a^a^-+-bifii)(afit^-ai: 

 _\" =[ {a,^-b,ya,^-b^-)-Aa,aJb,b2'\ [(ffli'-64'')(a/-6/)— 4014640363 3-l-4(aia2-feii>2)(ai62-l-ajfei)(a3a',-6.;ft4)(a46j+0il; 

 .IV r=[ («, ■-6, ■')(a2^-62")-4a, (126,62] [(a4'-64'')(a3'-6i'')-i-4a464aj6j ]— 4(a.,rt2-6,62)(a.6,-i-a26,)(a4a3-+-6463)(aj64-04( 

 ;'■ =[ (o, ''-6, -)(o/-62')-i-4a, 026,62] [(o4'-6/|')(oj^-6!")— 404640,63]— 4(a, 02+6, 62)(ai62-a26,)(a,,a3-6463)(a,,63+aji, 

 ■/ ' =[ (o,"-6,=)(o2'-62'')H-4aia,6,6j [(ai^-64-)(ai''-63'')-+-4a4640;63 ]-H4(o,O2-<-6,62)(a,6^-rt26,)(o4O3-J-6463)(a364-04i, 

 ,'" =[ (o, --6, ')(a2''-6,-)+4a, 026,62] [(a4''-64")(a3'''-63~)— 40464O363 ]+4(o,O2-f-6,62)(o,6^-a26,)(aja4-6j64)(o4634-0]i; 

 ;^'"=[ (o,"-6,')(o2'-62')-(-4o,o>,62] [(o3'-63')(o4''-64^)4-4o4640^63]— 4(a,a,4-6i62)(«i62-a26,)(a403-t-646,)(aj64-a4b 



'i =2 

 •'' =2 

 ■ "■ =2 



■: =2 



i^"'=2 



[(«i'-6,')(02'-6/)—4rt,a26,62](a4a3-64fc3)(a,64-i-0463)-f-[(04^-64^)(a3»-63^)— 4036304641(0, a2-6,6,)(a,6,-i-aji, 

 [(rt,''-6,'')(o2°-62")— 4oia26,63](a40j-(-646,)(a364-«463)— [(a4=-64-)(a3'-63-)H-4a3a46j64](o,Oj-6,62)(Oi62-t-a2i 

 [(a,''-6,^)(o/-62")— 4a, 026,621(0 403-6463)(a364-0463)—[(o4''-64^)(a3^-63^)—4a3a46364](ai02-6i62)(fli62-i-6,fl 

 [(o,'-6,')(a2^-62')— 4a,a26i62](a403-t-646j)(aA-a4fr3)-i-[(o4^-64')(a3^-63^)4-4a36ja464](oia3-6,6^)(a,6^-t-6,a 



[(a,^-6,'}(a2"-62')-(-4a,026i62](a4a3-646i)(oj64-t-a46>,)-+-[(o4^-64')(a3=-6j'')— 4o3a46j64](o,03-H6,62)(o,6^-6,fi 



[(o,'-6,=)(a2''-62')-l-4ai026,62](o4a3-t-6463)(a>4-a4fci)— C(a4'-V)(«-i'-'^3^)"'"'*«4«3''4''^]("i''="'"''i*=)("'''^'''''' 

 L(«i'-fci'')(a2'-i62')-t-4a,a2fc,fc2](a4a3-fc463)(o3A4-t-O4A3)-[(o4^-A4')(a3'''-t3=)-4a4a3fc463](o,a2-+-/».6^)(a,fc2-6,0 



[(0,^-6, '}(a3'-62")-H4o,0;s6,62](a4aj-6463)(«364 — a463)-[(o4^-64'')(o3^-63^)+4a4a36463](o,a2-H6,62)(ai62-rt2* 



laoltre per queslo quarto caso abbiamo 



ja' = 64 , /J." = 40 , li'" = 24 . 

 Sia data la 



.t 4- 2/' = 40885^- = (37. IT. 13. 5)= f (6'-^ r-)(4' -^V)(3'-h2'){2'^i') V , 



I 



> 



